Wireless Weather Station -4 Degrees to 158 Degrees F/-20 Degrees to 70 Degrees C 1 Percent to 99 Percent Primary Scale Humidity Power Source Battery Application Indoor 2.25 in H x 1.75 in W 2-Digit LCD Display - 1 in Digit Height 3 in L x 2 1/2 in W x 7/8 in D Tabletop Wall-Mount Temperature Scale Celsius Fahrenheit